feat: Fix options.d.ts syntax and declare consts

Author: davesnx

package.json

@@ -13,7 +13,7 @@
     "test": "nyc mocha src/*.test.js -r @swc-node/register",
     "test:watch": "npm test -- --watch",
     "lint": "standard --verbose | snazzy",
-    "build": "swc src -d lib --copy-files --only *.js",
+    "build": "swc src -d lib --copy-files",
     "postinstall": "npm run install-binary",
     "coverage": "nyc report --reporter=lcov",
     "precodeclimate": "npm run coverage",

src/options.d.ts

@@ -1,10 +1,10 @@
 import * as Joi from "joi";
 
-export const optionsSchema: Joi.SchemaLike
-export const preSpawnSchema: Joi.SchemaLike
-export const spawnSchema: Joi.SchemaLike
-export function parseOptions(options: PartialOptions, filter: string, json: any): any
-export const optionDefaults: IOptions;
+export declare const optionsSchema: Joi.SchemaLike;
+export declare const preSpawnSchema: Joi.SchemaLike
+export declare const spawnSchema: Joi.SchemaLike
+export declare function parseOptions(options: PartialOptions, filter: string, json: any): any
+export declare const optionDefaults: IOptions;
 interface IOptions {
     color: boolean,
     input: string,